Improvement in stove-pipe thimbles



UNITED. STATES PATENT OFFICE.

PATRICK MIHAN, OF OAMBRIDGEPORT, MASSACHUSETTS.

IMPROVEMENT IN STOVE-PIPE THIMBLES.

Specification forming'part of Letters Patent No. 203.478, dated May 7, 1878 application filed January 2, 1878.

To all whom it may concern:

Be it known that I, PATRICK MIHAN, of Gambridgeport, of the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Stove-Pipe Thimbles; and do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figure l is a front elevation, Fig. 2 a side view, and Fig. 3 a vertical and transverse section, of one of my improved articles. Fig. 4 is a section, showing its application to a chimney or a flue thereof.

It is specially designed for chimney-fines having two'or more inducts, and is to prevent smoke arising from a lower induct from being deflected into the one next above it and, besides, is to improve the draft of the latter.

In carrying out my invention, Iprovide the tubular part a of the thimble, which enters the brick-work of the chimney, with a deflector or inclined plate, b, which, when the thimble is in place in the chimney, is intended to project into the flue and upward therein, in manner as shown in Fig. 4, in whichAis the brick-work, and B the flue, of the chimney. This deflector I also constitute one side or portion of an inclined tubular extension, 0, of the tubular part a of the thimble, such part a being projected back from a plate, D, furnished with a round hole or mouth, 0, for the reception of a stovepipe.

The upper side f of the extension serves, with the upper part of the tubular portion a, to support the brick-work, as well as to enlarge the passage into the flue. Extending across the thimble is a rod, F, which answers as a stop to prevent a stove-pipe from being inserted too far into the thimble.

A current of smoke passing up the flue will impinge against and be deflected by the plate b, and by it will be prevented from passing into the thimble; and besides this, the draft through the thimble into the flue will be improved by the deflector.

I make no claim to a stove-pipe thimble having a series of hooks to arrest the passage of a pipe into the thimble. Nor do I claim a stove-pipe having one end partially closed by an inclined plate to extend into the chimney. Nor do 1 claim a tubular thimble formed and provided with holes, as represented in the United States Patent No. 178,510.

What I claim as my invention is as follows:

1. The improved stove-pipe thimble, substantially as described, provided with the deflector b, and with the extension 0, arranged therewith and with the top of the tubular portion a, as set forth, whereby the upper side of the extension and the upper part of the said portion a are adapted to sustain the breast-work of the chimney, and other advantage, as described, is attained.

2. The stove-pipe thimble provided with the rod F, extended across its portion a, asset forth, and also the tubular deflecting extension G, arranged with such rod and part a, as represented.

PATRICK MIHAN.

Witnesses:

R. H. EDDY, JOHN R. SNOW. 

